- Hioth
- Hip Shing Electronics
- Hip Street
- HIPCAM
- Hiper
- HIPOWER
- Hippus NV
- Hipstreet
- HIQUEL
- HireTech
- HiRO
- Hirobo
- Hirose Electronic
- Hirschmann
- Hirschmann Car Communication
- HIS
- HISEER
- Hiseeu
- Hisense
- Hisense Communication
- Hisense Electric
- Hisense Group
- Hisense International
- Hisilicon
- Hispacold
- HiSPEC
- Historic Mantels
- Hisun
- HIT
- Hit Products
- HIT Welding
- HIT-NOT
- Hitachi
- Hitachi Koki
- Hitachi Koki USA
- Hitachi Kokusai Electric America
- Hitachi Maxell
- Hitch Haul
- HITCHES
- HiTEC
- Hitec RCD
- Hitec RCD Inc.